定语从句语法讲解英语
定语从句（也称关系从句、形容词性从句），是指一类由关系词（英语：relative word）引导的从句，下面是小编整理的定语从句语法讲解英语，一起来看看吧。
定语从句语法讲解英语1
（一）定语从句的结构：在复合句中，修饰某个名词或代词的句子（做这个名词或代词的定语）叫定语从句，定语从句一般放在被修饰的名词或代词后面，被修饰的名词或代词叫做定语从句的先行词，它与定语从句之间要有一个词连接，这个词指代先行词的内容叫做关系词（关系代词或关系副词：that， which， who， whose， when， where， why）。先行词在定语从句中充当主语，宾语，时间，地点，原因状语。
结构：先行词+关系词+定语从句。
1. There she saw a wall of water that was quickly advancing towards her.
2. In Japan， someone who sees another person making the gesture will think it means money.
3. A theme park is a collection of rides， exhibitions or other attractions that are based on a common theme.
4. The park has a conservation center that helps protect marine animals and their habitats in the rivers and coastal waters of Asia.
5. Visitors can go on exciting rides where they can feel what it is like to do the things they have seen their heroes do in the movie.
6. Oprah Winfrey is a black woman whose rise to fame is an inspiring story.
（二）定语从句分为限定性定语从句和非限定性定语从句：
限定性定语从句：从句对先行词进行必要的描述或说明，缺少它，则句义显得不完整，从句与先行词紧密相连。 非限定性定语从句：对先行词进行补充说明，解释，它与先行词之间有逗号隔开。
1. Before she could move， she heard a loud noise， which grew to a terrible roar.
2. Tree after tree went down， cut down by the water， which must have been three meters deep.
3. Flora， whose beautiful hair and dress were all cold and wet， started crying.
4. Their talk includes rhythm and rhyming words as well as tongue twisters， which often make the audience applaud.
（三）关系词前面可以根据定语从句的内容加上一些介词，这些关系词在介词后面常用which 或whom.
1. There was a man with whom I would have to work together and finally the manager of the company.
2. Many people who saw the film were afraid to swim in the sea when they remembered the scenes in which people were eaten by the shark.
定语从句语法讲解英语2
要学定语从句，得知道什么是定语。定语是用来限定、修饰名词或代词的。例如，a good book， good就是定语。那么复合句中修饰名词或代词的从句就叫做定语从句。定语从句由关系代词或关系副词引导，相当于形容词，在句中作定语。被定语从句修饰的词叫先行词，定语从句一般放在先行词的后面。引导定语从句的关联词称为关系词，关系词有关系代词和关系副词。关系代词有that， which， who， whom， whose等，绝对没有what;关系副词有where， when， why，how等。关系词放在先行词和定语从句之间，起连接作用，同时又作定语从句的某个成分。
一、关系代词引导的定语从句
1、由who， whom， that，Whose引导的从句
这些词代替的先行词是人的名词或代词，who作主语指人，whom作宾语指人，that既可作主语又可作宾语（作宾语可以省略），可以指人也可以指物。Whose 用来指人或物，只用作定语。
（1） Is he the man who/that wants to see you? 他是那个想见你的男人吗？（who/that在从句中作主语）
（2） He is the man whom/ that I saw yesterday. 他就是我昨天见的那个人。（whom/that在从句中作宾语）
（3） The man whom you spoke to just now is our English teacher 你刚刚说话的那个男人是我们的英语老师
（4） he man whose son is a doctor is our professor. 那个儿子是医生的男人是我们的教授。
2、由which， that引导的`从句
它们所代替的先行词是事物的名词或代词，在从句中可作主语、宾语等，作宾语时可以省略，例如：
（1）Prosperity which / that had never been seen before appears in the countryside. 农村出现了前所未有的繁荣。（which / that在从句中作主语）
（2）The package （which / that） you are carrying is about to come unwrapped. 你拿那个包裹快要散开了。（which / that在从句中作宾语）
注意： 代表物时多用which，但在下列情况中用that而不用which：
a）先行词是anything， everything， nothing ， none等不定代词时；
b）先行词由every， any， all， some， no， little， few， much等修饰时，这时的that常被省略；
c）先行词前有序数词或被形容词最高级修饰时；
d）先行词中既有人又有物时；
e）整个句中前面已有which，who，that时；
f）当先行词为物并作表语时；
g）先行词为one时；
h）先行词同时又被the only，the very，the same修饰时；
二、关系副词引导的定语从句
1、when指时间在定语从句中做时间状语也可做连接词用 I still remember the day when I first came to the school.
2、where指地点在定语从句中做地点状语 Shanghai is the city where I was born.
3、why指原因在定语从句中做原因状语 ，用在reason 后面。 Please tell me the reason why you missed the plane.
常见考法
对于定语从句的考查，多以单选的形式考查学生灵活运用的能力。一般情况下，常从关系词的意义和功能的角度考查，重点是that，which，who引导的定语从句。
典型例题：You're the only person ______I've ever met ______could do it.
A. who B. whom C. whom D. who
解析：先行词person后有两个定语从句，第一个从句省略了关系代词whom.因为， whom作从句中met的宾语，可以省略。第二个从句who could do it.who在从句中作主语，不可省略。
答案：D
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